<!DOCTYPE html>
<html lang="en">
<head>
    <meta http-equiv="content-Type" charset="UTF-8">
    <meta http-equiv="x-ua-compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Title</title>
</head>
<body>
<h1>上传文件</h1>
<form action="" method="post" enctype="multipart/form-data">
    <input type="file" name="file_name">
    <input type="submit">
</form>
</body>
</html>